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Front Facing Plenum

Fryday13

By Fryday13,
in Engines & Forced Induction

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Fryday13

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Posted

Hey Just bought an RB25DET Skyline and looking at ways of improving power first off. I know there are many ways to do this and all are somehwere in the forums but i want to know more about the front facing plenum idea. What exactly does this do? Does it require more modifications than just this? will it help increase power now or later down the track?

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https://www.sau.com.au/forums/topic/392365-front-facing-plenum/
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89CAL Grand Master

89CAL

Posted
Posted (edited)

Standard plenum is fine for most power goals. Your better off having an aftermarket ecu with a front facing plenum. Only reason i put one on is cause it looks good and makes changing plugs easier

Edited by 89CAL
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

If you have not spend $5000+ on basic mods

Turbo

ECU

Injectors/Fuel pump

AFM

Clutch

Brakes

Suspension

FMIC

Then don't waste time with a plenum. Better off spending money on all the other stuff, far better gains and return on the spend.

Fryday13 Collaborator

Fryday13

Posted
  • Author
Posted

Awesome Cheers guys!!!

You dont happen to have any quick links that will direct me to the topics on getting the power I want etc? This place can be a mission to find what im looking for even with the search

Fryday13 Collaborator

Fryday13

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Posted

Well I havent really got a power Number in mind which may be my first problem. Whats stock power output? Ill check the other outputs in the dyno results and try see what should be next, it allready has a 2.5" exhaust straight through no cats and an 11psi wastgate actuator.

But ill check out the results and the FI Guide, Cheers!

Dajae Community Regular

Dajae

Posted
Posted

Well I havent really got a power Number in mind which may be my first problem. Whats stock power output? Ill check the other outputs in the dyno results and try see what should be next, it allready has a 2.5" exhaust straight through no cats and an 11psi wastgate actuator.

But ill check out the results and the FI Guide, Cheers!

200 - 240ish rwkw is quite achievable on a budget. Search using those figures and see how you go :)

kitto Mentor

kitto

Posted
Posted

Before chasing power, how about some good suspension? Ie coilovers or decent shocks and springs, new bushes throughout etc.

Maybe 4000 series rotors, new pads and brake fluid, maybe replace the old worn and cracked brake lines etc.

Fryday13 Collaborator

Fryday13

Posted
  • Author
Posted

Uh Hadnt really thought about that my head was blinded by the idea of speed. As a start though I still have my R33 GTS4 which has bilstein Shocks all with new bushes. Do you reckon it would be an improvement to swap these over?

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

OK well the Bilsteins would be an improvement but you would need to check that they are interchangeable- the awd supension could be different. A Bilstein dealer could possibly adapt them if necessary.

kitto Mentor

kitto

Posted
Posted

Yes, do your research for a long time then make a decision. If you rush it, you'll kick yourself.

Power should always be the last upgrade on anyones mind.

Quite often i've found if the car handles and stops well i'm happy with the factory power output. Maybe fit an exhaust, air intake and a few other things to free it up a bit.

Hanaldo Grand Master

Hanaldo

Posted
Posted

And if you need to lose weight in your pocket, modify a skyline! About 7k should get you 280+rwkw with nice solid handling. Then factor in about 1k more for when nothing goes to plan.

laugh.gif

I'd factor in more than 1k, could wrack that up in one dyno session when something goes wrong lol.

SargeRX8 Grand Master

SargeRX8

Posted
Posted (edited)

Every time I see my car on the dyno, I don't know about you guys, but I squint my eyes and get f**king nervous when those revs climb. It never bothers me at all on the road, only on the dyno. The first time I got my car on the rollers, I was like Wtf are they doing to my car!

Edited by SargeRX8

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